Number Systems Review

If a binary number ends with a 1, it must be...

• An odd number
• An even number
• A prime number
• The number 12

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

What is the point of binary?

• It represents how computers interpret electrical signals
• Because I like to make you do extra math :]
• For the lulz
• Because it describes celestial systems

Convert 128₁₀ to binary.

• 1000 0000
• 0111 1110
• 1000 0001
• 1100 1100

Convert 37₁₀ to binary.

• 100101

• 100011

• 100111

• 1000101

Convert 00010001₂ to decimal.

• 17
• 27
• 37
• 47

Convert 1111 1111₂ to decimal.

• 255
• 245
• 235
• 225

Binary 1110
Hex = ?

• 14
• F
• 15
• E

The hexadecimal value 1A₁₆ is equivalent to what decimal value?

• 22

• 80

• 12

• 26

What is the hexadecimal 2D₁₆ in binary?

• 0001 1101
• 0010 1110
• 0010 1101
• 0010 1011

Convert the decimal number 20₁₀ to hexadecimal.

• 14
• 11
• 1B
• B0